发明名称 |
AUTOMATIC CALIBRATION OF PROCESSING DELAY OF RADIO EQUIPMENT |
摘要 |
A method and system for measuring end-to-end processing delay of the RE between an input interface and a transmit port in the downlink direction and a receive port and an output interface on the uplink direction is disclosed. The method and system if for use in a radio equipment node (RE) connected to a radio equipment control node (REC). Once the downlink and uplink radio channels are activated at a predetermined carrier frequency, a chirp sine wave is added at the input interface and the receive port such that the chirp sine wave becomes mixed with the carrier frequency. Sampling of a received downlink mixed signal is done at the transmit port and of the received uplink mixed signal at the output interface. The sampled mixed signals are then cross-correlated with a reference chirped sine wave to obtain a signal phase shift which is then converted to obtain a time delay associated with the end-to-end processing delay of the RE. |
申请公布号 |
WO2015173754(A1) |
申请公布日期 |
2015.11.19 |
申请号 |
WO2015IB53535 |
申请日期 |
2015.05.13 |
申请人 |
TELEFONAKTIEBOLAGET L M ERICSSON (PUBL);GRIFFIOEN, ROBERT |
发明人 |
GRIFFIOEN, ROBERT |
分类号 |
H04W88/08;H04W56/00 |
主分类号 |
H04W88/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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